A deployment adjustment mechanism for a capsule

Abstract

The present divisional application is a divisional application of Chinese Patent Application No. 202110589191.X, filed on May 28, 2021, entitled "Vehicle Front Airbag Coupled with Side Air Curtain and Vehicle Airbag Group". The present application provides a bag deployment adjustment mechanism, belonging to the technical field of vehicle passive safety, specifically comprising a bag, a tightening strap and a strap controller, the bag inflates and expands, the tightening strap tightens the bag to maintain a first shape, the strap controller actuates to release the tightening strap, the bag expands to a second shape, the tightening strap includes an A end fixed to the strap controller, a B end fixed inside the bag, and a closed loop structure between the A end and the B end, the closed loop structure tightens at least part of the structure of the bag to maintain the first shape of the bag. Through the processing scheme of the present application, the protection effect of the bag on the passengers under different passengers, sitting positions and positions is improved, and more possibilities are provided for the combination of different airbags.

Description

[0001] This divisional application is a divisional application of Chinese patent application No. 202110589191.X entitled "A vehicle front airbag coupled with a side curtain airbag and a vehicle airbag assembly", filed on May 28, 2021. Technical Field

[0002] This application relates to the field of vehicle passive safety, and in particular to a pouch deployment adjustment mechanism. Background Technology

[0003] In an offset collision, because the contact point between the occupant's head and the front airbag is at the edge of the airbag, the front airbag cannot provide sufficient support for the occupant's head, thus losing its protective effect on the occupant. Summary of the Invention

[0004] In view of this, this application provides a bladder deployment adjustment mechanism that enables the bladder to deploy in different states and form a reliable airbag group coupling structure with other airbags, solving the problem that the front row bladder cavity in the prior art cannot provide sufficient protection for the occupants and improving the airbag's protective effect on the occupants.

[0005] The expansion adjustment mechanism for a pouch provided in this application adopts the following technical solution.

[0006] An expansion adjustment mechanism for a pouch includes a pouch, a tightening strap, and a strap controller. The pouch is inflated, the tightening strap tightens the pouch to maintain a first shape, and the strap controller actuates to release the tightening strap, causing the pouch to expand to a second shape. The tightening strap includes an A end fixed to the strap controller, a B end fixed inside the pouch, and a closed-loop structure located between the A end and the B end. The closed-loop structure tightens at least a portion of the pouch to maintain the pouch in the first shape.

[0007] Optionally, the tightening strap is a continuous strap.

[0008] Optionally, the bag includes a main cavity and a secondary cavity, the secondary cavity being recessed inside the main cavity, and the closed-loop structure tightens the connection between the main cavity and the secondary cavity to prevent the secondary cavity from expanding outward when inflated, and the bag is in the first state.

[0009] Optionally, the pull belt controller actuates to release the tensioning pull belt A end. Under the expansion of the pouch, the closed-loop structure is canceled, the secondary cavity expands from the inside of the main cavity to the outside, and the pouch is in the second state.

[0010] Optionally, the pouch has at least four perforations forming a connection port. The pouch portion surrounded by the four perforations is recessed inward so that the four perforations form two corresponding side perforations. The A end of the tightening strap is fixed to the strap controller inside the pouch. The B end of the tightening strap enters from one side perforation and exits from the other side perforation. After the tightening strap between the A end and the connection port forms the closed loop structure, it is then fixed to the pouch.

[0011] Optionally, the closed-loop structure consists of a knot-like body disposed between the A end and the connection port on the tightening strap, a tightening strap at the B end binding a slip knot between the knot-like body and the A end, and a tightening strap between the knot-like body and the slip knot.

[0012] Optionally, the knot is a dead knot formed by the tightening strap binding.

[0013] Optionally, the slip knot is formed by binding the connector and end B with a tightening strap. The binding steps are as follows: after end B is led out from the connector, it is wrapped around the tightening strap between end A and the connector to form a locking ring. The redundant part of the locking ring and end B is inserted into the locking ring from the other side. The redundant part and end A are pulled to form the slip knot, which is then secured on the side of the knot-like body away from the connector.

[0014] Optionally, the pouch is inflated, the A end of the tightening strap is stressed, the B end of the tightening strap is not stressed, and the closed-loop structure circumferentially tightens the connection port, so that the pouch maintains the first shape.

[0015] Optionally, the pull strap controller releases the tightening pull strap A end, and under the action of the pouch expansion, the pull strap B end is forced to untie the knot, the closed-loop structure is canceled, and the pouch is expanded to the second form.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] The aforementioned airbag deployment adjustment mechanism allows for selective deployment of portions of the airbag structure, enhancing its protective effect and adapting to protect occupants of different body types, seating positions, and orientations. In the event of an oblique collision, after the main and secondary chambers of the front airbag fully deploy, the secondary chamber couples with the side curtain airbag. This allows the side curtain airbag to provide stable and effective support for the front airbag, reducing the likelihood of occupants entering the gap between the front and side curtain airbags and colliding with the dashboard or A-pillar during an offset collision, thus improving the protective effect of the front airbag on occupants. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the front airbag in this application when fully deployed.

[0020] Figure 2 A schematic diagram showing the structure of the front airbag fully deployed after removing the upper fabric panel.

[0021] Figure 3 for Figure 1 A cross-sectional view along the CC direction.

[0022] Figure 4 This is a schematic diagram of the structure in this application where the main cavity has expanded but the secondary cavity has not.

[0023] Figure 5 A schematic diagram of the structure from another perspective, showing the main cavity unfolded after removing the upper fabric piece, while the secondary cavity remains unexpanded.

[0024] Figure 6 for Figure 4 A cross-sectional view along the BB direction.

[0025] Figure 7 This is a schematic diagram of the side air curtain structure of this application.

[0026] Figure 8 for Figure 7 A cross-sectional view along the AA direction.

[0027] Figure 9 This is a schematic diagram of the coupling structure between the front airbag and the side curtain airbag in this application.

[0028] Figure 10 This is a schematic diagram of the structure of the side air curtain and the main cavity deployed, while the secondary cavity is not deployed, according to this application.

[0029] Figure 11 This is a structural diagram of the upper fabric piece, lower fabric piece, upper pull strap, and lower pull strap of this application.

[0030] Figure 12 An internal view of the front airbag of this application without the upper fabric piece removed.

[0031] Figure 13 for Figure 12 A cross-sectional view along the EE direction.

[0032] Figure 14 Another internal view of the front airbag of this application, with the upper fabric piece removed.

[0033] Figure 15 for Figure 14 A cross-sectional view along the FF direction.

[0034] Figure 16 This is a schematic diagram of the structure of the tensioning belt fixed by the tensioning belt controller of this application.

[0035] Figure 17 This is a schematic diagram of the structure of the pull belt controller for releasing the tensioned pull belt in this application.

[0036] Figure 18 This is a schematic diagram of the knot structure of the closed-loop structure of the tensioning strap in this application.

[0037] Figure 19 This is a schematic diagram of the structure of the pull belt controller when the pull belt controller is used to fix and tighten the pull belt in this application.

[0038] Figure 20 This is a schematic diagram of the structure of the belt controller when the belt controller releases the tension belt in this application.

[0039] Figure 21 This is a schematic diagram of the structure of the upper and lower pull straps before they are sewn together.

[0040] Figure 22 This is a schematic diagram of the structure after the upper and lower pull straps of this application are sewn together.

[0041] Explanation of reference numerals in the attached drawings: 1. Front airbag; 11. Main cavity; 12. Secondary cavity; 13. Upper fabric piece; 131. Recessed part; 132. Upper tether strap; 133. Lower tether strap; 134. Upper ring part; 135. Lower ring part; 136. Upper extension part; 137. Lower extension part; 14. Lower fabric piece; 15. Main piece; 16. Extended side piece; 161. Perforation; 162. Fold-over part; 163. Protrusion; 164. Pre-stitched seam; 17. Connection port; 18. Inflation port; 19. Fixing hole; 2. Side air curtain; 21. Through hole; 22. Elastic fabric sheet; 3. Tightening strap; 31. End A; 32. End B; 33. Knot-shaped body; 34. Slip knot; 341. Locking ring; 342. Redundant part; 35. Closed-loop structure; 4. Strap controller; 41. Base; 42. Swing arm; 421. Rotating shaft; 43. Spring; 44. Fixing post; 45. Fixing ring; 46. Check ring; 47. Cylinder. Detailed Implementation Detailed Implementation

[0042] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0043] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0045] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0046] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0047] This application provides a vehicle front airbag coupled with a side curtain airbag.

[0048] like Figure 1-10As shown, a coupling structure for an airbag assembly includes a front airbag 1 and side curtain airbags 2. The front airbag 1 includes a main cavity 11 and a secondary cavity 12. After deployment, the main cavity 11 is located directly in front of the occupant. The secondary cavity 12 communicates with the main cavity 11 and extends towards the side curtain airbag 2 after deployment, forming a coupling connection with the side curtain airbag 2. The deployed side curtain airbag 2 is provided with a through hole 21 and / or a connecting part that couples with the secondary cavity 12. The connecting part can be a non-inflatable area where several airbag fabric pieces are connected and fixed by means of sewing, adhesive, etc. The through hole 21 is provided on the connecting part.

[0049] In this embodiment, the front airbag 1 is installed inside the steering wheel, and after deployment, it is positioned between the steering wheel and the occupant. The side curtain airbag 2 is installed above the side window of the vehicle, and after deployment, it is positioned between the occupant and the window, preventing impact, external intrusion, and occupant removal. In other embodiments, the front airbag 1 can also be installed inside the dashboard, and after deployment, it is positioned between the front passenger occupant and the dashboard.

[0050] like Figure 9 As shown, when a vehicle collision occurs, after the main cavity 11 and secondary cavity 12 of the side curtain airbag 2 and the front airbag 1 are fully deployed, the secondary cavity 12 enters the through hole 21 of the side curtain airbag 2, thus forming a coupling connection between the front airbag 1 and the side curtain airbag 2. In this embodiment, the side curtain airbag 2 is provided with a through hole 21 that couples with the secondary cavity 12. This allows the side curtain airbag 2 to provide stable and effective support for the front airbag 1, reducing the chance of the occupant entering the gap between the front airbag 1 and the side curtain airbag 2 and colliding with the dashboard or the vehicle's A-pillar during an offset collision; and improving the protective effect of the front airbag 1.

[0051] like Figure 11 As shown, the frontal airbag 1 includes an upper fabric piece 13 and a lower fabric piece 14. The edges of the upper fabric piece 13 and the lower fabric piece 14 are fixedly connected. In this embodiment, the edges of the upper fabric piece 13 and the lower fabric piece 14 are sewn together, and the sewing line of the upper fabric piece 13 and the lower fabric piece 14 is S1. Both the upper fabric piece 13 and the lower fabric piece 14 include a main piece 15 and an extended side piece 16, which are integrally cut pieces. The internal space of the two main pieces 15 after being fixedly connected forms a main cavity 11, and the internal space of the two extended side pieces 16 after being fixedly connected forms a secondary cavity 12. The center of the lower fabric piece 14 is provided with an inflation port 18 that connects to the vehicle's gas generator and / or airbag housing. The edge of the inflation port 18 is provided with a fixing hole 19, through which the bolt of the vehicle's gas generator passes and is fixed inside the vehicle's airbag housing. In other embodiments, the frontal airbag also includes other fabric pieces, with the upper and lower fabric pieces adjacent to each other, stitching together the entire outline of the extended side piece and at least a portion of the outline of the main piece, and the upper and lower fabric pieces are then stitched together with other fabric pieces to form the airbag cavity.

[0052] The shape and structure of the extended side pieces 16 of the upper fabric piece 13 and the lower fabric piece 14 can be adjusted according to the actual protection needs of the secondary cavity 12, and they can be the same or different. In this embodiment, the two extended side pieces 16 have the same shape and outline, and both have a structure with increased width in the direction away from the main piece 15. After the front airbag 1 is fully deployed, the width of the end of the secondary cavity 12 connected to the main cavity 11 is smaller than the width of the end away from the main cavity 11, so that the secondary cavity 12 can form a more stable coupling connection with the through hole 21 of the side air curtain 2.

[0053] like Figure 12-15 As shown, the connection port 17 between the main cavity 11 and the secondary cavity 12 is provided with an expansion adjustment mechanism, including a tensioning strap 3 and a strap controller 4. One end of the tensioning strap 3 is fixed to the airbag housing or airbag cavity inside the steering wheel or dashboard. The other end of the tensioning strap 3 passes through the connection port 17 in a serpentine manner multiple times before being fixed to the airbag housing or airbag cavity inside the steering wheel or dashboard of the vehicle. In this embodiment, the other end of the tensioning strap 3 passes through the lower fabric piece 14 and the upper fabric piece 13 on one side of the center line of the connection port 17 in sequence, and then passes through the upper fabric piece 13 and the lower fabric piece 14 from the other side of the center line of the connection port 17. That is, both sides of the center line of the extended side pieces 16 of the upper fabric piece 13 and the lower fabric piece 14 are provided with perforations 161 for the tensioning strap 3 to pass through, that is, each extended side piece 16 has at least two perforations 161.

[0054] It should be noted that the tightening strap 3 tightens at least a portion of the structure of the pouch, maintaining the pouch in its first shape. In this embodiment, the secondary cavity 12 is fixed to the main cavity 11 under the action of the tightening strap 3. In other embodiments, the at least portion of the pouch structure tightened by the tightening strap 3 has at least four perforations forming connection openings. The pouch portion surrounded by the four perforations is recessed inward, forming two corresponding side perforations. One end of the tightening strap is fixed inside the pouch, and the other end of the tightening strap passes through one side perforation and back through the other side perforation before being fixed to the pouch.

[0055] like Figure 9 , Figure 10 , Figure 16 and Figure 17As shown, a pull strap controller 4 is provided on the airbag housing inside the vehicle's steering wheel or dashboard. The pull strap controller 4 is used to release at least one end of the tightening pull strap 3. When the pull strap controller 4 fixes one end of the tightening pull strap 3, the other end of the tightening pull strap 3 can be fixed to the pull strap controller 4 and / or the airbag cavity. The tightening pull strap 3 forms a tightening effect on the connection port 17, forcing the upper fabric piece to be tightly attached to the lower fabric piece, fixing the folded sub-cavity 12 in the internal space defined by the tightening pull strap 3. When it is only necessary to unfold the main cavity 11, the pull strap controller 4 does not release the tightening pull strap 3, and the sub-cavity 12 can remain in an uninflated state. When it is necessary to unfold the sub-cavity 12, the pull strap controller 4 releases the end of the tightening pull strap 3, the tightening pull strap 3 releases its tightening effect on the connection port 17, and under the action of the expanding gas, the sub-cavity 12 is filled with gas and extends out from the connection port 17, coupling with the through hole 21 of the side curtain airbag 2.

[0056] In this embodiment, the tightening strap 3 forms a closed-loop structure 35 at the connection port 17, and the circumference of the closed-loop structure 35 is smaller than the circumference of the connection port 17. The closed-loop structure 35 can restrict the unfolding of the secondary cavity 12 from the circumferential direction. Those skilled in the art will understand that without the closed-loop structure 35, the strap constraining the secondary cavity 12 would only pull the upper fabric piece 13 to the lower fabric piece 14, and the connection port 17 would only be stressed on one side. Excessive stretching would cause the secondary cavity 12 to deform, thereby affecting the subsequent unfolding.

[0057] It should be noted that the tightening strap can be a continuous strap. One end of the tightening strap is fixed inside the pouch, and the other end of the tightening strap is inserted through a hole on one side and returned through a hole on the other side. After the tightening strap between the one end and the connection port is wrapped to form the closed loop structure, it is then fixed to the pouch.

[0058] like Figure 18 As shown, the two ends of the tightening strap 3 are A end 31 and B end 32, respectively. A end 31 and B end 32 are located on the same side of the connection port 17. The closed-loop structure 35 includes a knot-like body 33 disposed on the tightening strap 3 between A end 31 and the connection port 17, a slip knot 34 of the tightening strap 3 at B end 32 tied between the knot-like body 33 and A end 31, and a tightening strap 3 between the knot-like body 33 and the slip knot 34. In this embodiment, the knot-like body 33 is a dead knot formed by the tightening strap 3; in other embodiments, the knot-like body 33 can also be a fixing block fixed on the tightening strap 3, which can serve to prevent the slip knot 34 from moving.

[0059] The process of forming the closed-loop structure 35 is as follows: a knot is tied between end A 31 of the tightening strap 3 and the connecting port 17 to form a knot-like body 33, fixing end A 31 inside the steering wheel or dashboard. A slip knot 34 is tied between the connecting port 17 and end B 32. The steps for tying the slip knot 34 are as follows: after end B 32 is led out from the connecting port 17, it is wrapped around the tightening strap 3 between end A 31 and the connecting port 17 once to form a locking ring 341. The redundant part 342 of the locking ring 341 and end B 32 is inserted from the other side of the locking ring 341 and then pulled to form the slip knot 34. The slip knot 34 can move up and down on the tightening strap 3 between end A 31 and the connecting port 17. When it moves upward to the knot-like body 33, it is blocked and locked at the knot-like body 33 and cannot move further upward. Thus, the closed-loop structure 35 is formed.

[0060] like Figure 16 and Figure 17 As shown, the pull strap controller 4 is connected to end A 31 and is used to fix and release end A 31; end B 32 is fixed to the bladder cavity inside the main cavity 11 near the gas generator bracket.

[0061] When the pull belt controller 4 fixes end A 31, end A 31 exerts a pulling force on the connection port 17, and end B 32 relaxes. The knot body 33, the slip knot 34, and the tightening pull belt 3 between the knot body 33 and the slip knot 34 form a closed loop structure 35.

[0062] When the pull belt controller 4 releases end A 31, end A 31 loses its tension on the connection port 17, while end B 32 is subjected to the tension of the connection port 17, causing the slip knot 34 to open. The tightening pull belt 3 loses its end tension and becomes loose, causing the tightening effect on the connection port 17 to disappear. The folded secondary cavity 12 is pushed out of the connection port 17 under the action of the expanding gas, extends towards the side of the main cavity 11, and couples with the air curtain 2.

[0063] It should be noted that when the pull strap controller 4 releases end A, the closed-loop structure is canceled, and the tightened part of the bag further expands to make the bag present a second form. In other embodiments, the second form of the bag can be applied to restraint protection for different passengers, sitting postures, and positions.

[0064] like Figure 19 and Figure 20As shown, the pull belt controller 4 includes a base 41 and a swing arm 42. The base 41 is fixed inside the steering wheel or instrument panel. The pivot 421 of the swing arm 42 is located in the middle of the swing arm 42. The swing arm 42 rotates around the pivot 421, which is fixed inside the steering wheel or instrument panel. A spring 43 is provided between the base 41 and the swing arm 42. One end of the base 41 is fixedly connected to the spring 43, and one end of the swing arm 42 is fixedly connected to the other end of the spring 43. A fixed post 44 that abuts against the base 41 is hinged to the end of the swing arm 42 away from the spring 43. The hinge axis is parallel to the pivot 421 of the swing arm 42. The spring 43 exerts a spring force on one end of the swing arm 42 away from the base 41. Under the action of the spring force of the spring 43, the fixed post 44 abuts against the base 41. A pull strap check ring 46 is fixed on the base 41 and sleeved on the outer periphery of the fixed post 44. A fixed ring 45 is fixedly connected to the A end 31. The fixed ring 45 is formed by binding the tightening pull strap 3 of the A end 31. The fixed ring 45 is sleeved on the fixed post 44 between the pull strap check ring 46 and the base 41, thereby fixing the A end 31. The check ring 46 is fixed in the steering wheel or instrument panel. The check ring 46 can slide relative to the fixed post 44.

[0065] A cylinder 47 is provided on the base 41. After the extension rod of the cylinder 47 extends, it forms a force on the area between the pivot 421 of the swing arm 42 and the fixed column 44, causing the fixed column 44 to move away from the base 41. As the fixed column 44 moves away from the base 41, the fixed column 44 and the swing arm 42 rotate relative to each other. The fixed column 44 maintains its original angle and moves along the check ring 46 until the fixed column 44 separates from the base 41. At the same time, the spring 43 is compressed. After the fixed column 44 separates from the base 41, the fixing ring 45 can be detached from the fixed column 44, thereby releasing end A 31.

[0066] The check ring 46 prevents the retaining ring 45 from falling off the retaining post 44. When the end of the retaining post 44 is fully inserted into the check ring 46, the check ring 46 blocks the retaining ring 45, ensuring that the retaining ring 45 can separate from the retaining post 44. After the telescopic rod of the cylinder 47 retracts, the retaining post 44 re-abuts against the base 41 under the action of the spring 43.

[0067] In other embodiments, the pull belt controller 4 may also be a pneumatic gripper or other structure that can press or clamp the A end 31.

[0068] like Figure 12 and Figure 13As shown, the secondary cavity 12 is recessed within the main cavity 11 before unfolding, allowing it to be housed within the main cavity 11 when the pouch is not inflated. The extension side piece 16 includes a folded portion 162 and a protrusion 163. The portion of the extension side piece 16 connected to one end of the main piece 15 folds inward toward the main cavity 11 to form the folded portion 162. The end of the extension side piece 16 is fully inserted into the main cavity 11 as the folded portion 162 is folded inward, while the end of the extension side piece 16 remains in its original shape and protrudes toward the edge of the main piece 15 to form the protrusion 163. Pre-stitching lines 164 are provided on both extension side pieces 16. The pre-stitching lines 164 sew the protrusion 163 and the folded portion 162 together. After pre-stitching the secondary cavity 12, it can be stably positioned inside the main cavity 11, reducing the possibility of the secondary cavity 12 falling out of the main cavity 11 and causing damage to the secondary cavity 12. With the secondary cavity 2 no longer acting as a tensioning strap, the pre-suture 164 tears under the push of the expanding gas, and the secondary cavity 12 fully unfolds.

[0069] like Figure 1-3 As shown, the upper fabric piece 13 directly opposite the deployed front airbag 1 has a recess 131. This reduces the impact injury to the occupant caused by excessive inflation of the front airbag 1. Figure 11 As shown, the main cavity 11 is provided with an upper pull strap 132 and a lower pull strap 133. The upper pull strap 132 includes an upper ring portion 134 whose edge is fixedly connected to the edge of the recessed portion 131. The upper ring portion 134 is sewn together with the edge of the recessed portion 131, and the sewing line between the upper ring portion 134 and the recessed portion 131 is S3. The lower pull strap 133 includes a lower ring portion 135 whose edge is fixedly connected to the edge of the inflation port 18. The lower ring portion 135 is sewn together with the edge of the inflation port 18, and the sewing line between the lower ring portion 135 and the inflation port 18 is S2. The lower ring portion 135 also has a fixing hole 45 for the bolt of the gas generator to pass through. The upper pull strap 132 also includes an upper extension 136 extending from opposite sides of the upper ring portion 134 to the edge of the upper fabric piece 13. One end of the upper extension 136 is connected to the upper ring portion 134, and the other end is fixedly connected to the lower fabric piece 14. The upper extension 136 and the upper ring portion 134 are integrally cut pieces. The lower pull strap 133 also includes a lower extension 137 extending from opposite sides of the lower ring portion 135 to the edge of the lower fabric piece 14. One end of the lower extension 137 is connected to the lower ring portion 135, and the other end is connected to the upper extension 136. Figure 21 and Figure 22As shown, the lower extension 137 and the lower ring 135 are integrally cut pieces. The ends of the upper extension 136 and the lower extension 137 are fixedly connected to the edge of the main piece 15. The fixed connection positions of the ends of the upper extension 136 and the lower extension 137 avoid the connection between the extension side piece 16 and the main piece 15. The ends of the upper extension 136 and the lower extension 137 are both fixedly connected by sewing. The sewing lines at both ends of the ends of the upper extension 136 and the lower extension 137 are S4 and S5, respectively. After the front airbag is fully deployed, under the pulling force of the upper pull strap 132 and the lower pull strap 133, the recessed portion 131 in the center of the upper fabric piece 13 is more recessed into the airbag cavity than other surface contours. In this embodiment, there is one upper pull strap 132 and one lower pull strap 133. In other embodiments, there may be two upper pull straps 132 and two lower pull straps 133 or other quantities.

[0070] like Figure 1-22 The embodiments shown in this application also disclose a vehicle airbag assembly.

[0071] A vehicle airbag assembly includes a side curtain airbag 2 and a front airbag 1. The side curtain airbag 2 has a through hole 21 or a connecting portion. A secondary cavity 12 extends from the main cavity 11 toward the through hole 21 and couples with the through hole 21 or the connecting portion. At least a portion of the structure of the secondary cavity 12 extends from one side of the side curtain airbag 2 to the other side of the side curtain airbag 2 through the through hole 21, thereby achieving the coupling connection between the secondary cavity 12 and the side curtain airbag 2 to form a mutually coupled vehicle airbag assembly, which improves the protection of the vehicle airbag assembly for the occupants in the event of a vehicle collision.

[0072] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pouch deployment adjustment mechanism, comprising a pouch, a tightening strap, and a strap controller, wherein the pouch is inflated, the tightening strap tightens the pouch to maintain a first shape, and the strap controller actuates to release the tightening strap, thereby deploying the pouch to a second shape, characterized in that, The tightening strap includes end A fixed to the strap controller, end B fixed inside the pouch, and a closed-loop structure located between end A and end B. The closed-loop structure tightens at least a portion of the pouch to maintain the pouch in a first shape. The tightening strap is a continuous strap. The bag includes a main cavity and a secondary cavity. The secondary cavity is recessed inside the main cavity. The closed-loop structure tightens the connection between the main cavity and the secondary cavity to prevent the secondary cavity from expanding outward when inflated. The bag is in a first form. The bag has at least four perforations forming connection ports. The portion of the bag surrounded by the four perforations is recessed inward so that the four perforations form two corresponding side perforations. The A end of the tightening strap is fixed to the strap controller inside the bag. The B end of the tightening strap enters from one side perforation and exits from the other side perforation. After the tightening strap between the A end and the connection port forms the closed-loop structure, it is then fixed to the bag.

2. The pouch unfolding adjustment mechanism according to claim 1, characterized in that, The pull belt controller actuates and releases the tension pull belt A end. Under the expansion of the pouch, the closed-loop structure is canceled, the secondary cavity expands from the inside of the main cavity to the outside, and the pouch is in the second state.

3. The pouch unfolding adjustment mechanism according to claim 1, characterized in that, The closed-loop structure consists of a knot-like body disposed between end A and the connection port on the tightening strap, a tightening strap at end B binding a slip knot between the knot-like body and end A, and a tightening strap between the knot-like body and the slip knot.

4. The pouch unfolding adjustment mechanism according to claim 3, characterized in that, The knot-like structure is a dead knot formed by the tightening strap binding.

5. The pouch unfolding adjustment mechanism according to claim 3, characterized in that, The slip knot is formed by binding the connector and end B with a tightening strap. The binding steps are as follows: after end B is led out from the connector, it is wrapped around the tightening strap between end A and the connector to form a locking ring. The redundant part of the locking ring and end B is inserted into the locking ring from the other side. The redundant part and end A are pulled to form the slip knot. The slip knot is secured on the side of the knot-like body away from the connector.

6. The pouch unfolding adjustment mechanism according to claim 5, characterized in that, The bag is inflated, the A end of the tightening strap is stressed, the B end of the tightening strap is not stressed, and the closed-loop structure circumferentially tightens the connection port, so that the bag maintains the first shape.

7. The pouch expansion adjustment mechanism according to claim 6, characterized in that, The pull belt controller releases the tightening pull belt A end, and under the action of the pouch expansion, the pull belt B end is forced to untie the knot, the closed loop structure is canceled, and the pouch is unfolded to the second form.

Images